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Active Exploration by Chance-Constrained Optimization for Voltage Regulation with Reinforcement Learning

Author

Listed:
  • Zhenhuan Ding

    (Department of Electrical and Computer Engineering, State University of New York at Binghamton, New York, NY 13902, USA)

  • Xiaoge Huang

    (Department of Electrical and Computer Engineering, State University of New York at Binghamton, New York, NY 13902, USA)

  • Zhao Liu

    (School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China)

Abstract

Voltage regulation in distribution networks encounters a challenge of handling uncertainties caused by the high penetration of photovoltaics (PV). This research proposes an active exploration (AE) method based on reinforcement learning (RL) to respond to the uncertainties by regulating the voltage of a distribution network with battery energy storage systems (BESS). The proposed method integrates engineering knowledge to accelerate the training process of RL. The engineering knowledge is the chance-constrained optimization. We formulate the problem in a chance-constrained optimization with a linear load flow approximation. The optimization results are used to guide the action selection of the exploration for improving training efficiency and reducing the conserveness characteristic. The comparison of methods focuses on how BESSs are used, training efficiency, and robustness under varying uncertainties and BESS sizes. We implement the proposed algorithm, a chance-constrained optimization, and a traditional Q-learning in the IEEE 13 Node Test Feeder. Our evaluation shows that the proposed AE method has a better response to the training efficiency compared to traditional Q-learning. Meanwhile, the proposed method has advantages in BESS usage in conserveness compared to the chance-constrained optimization.

Suggested Citation

  • Zhenhuan Ding & Xiaoge Huang & Zhao Liu, 2022. "Active Exploration by Chance-Constrained Optimization for Voltage Regulation with Reinforcement Learning," Energies, MDPI, vol. 15(2), pages 1-17, January.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:2:p:614-:d:725819
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    References listed on IDEAS

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    1. Ying-Yi Hong & Gerard Francesco DG. Apolinario, 2021. "Uncertainty in Unit Commitment in Power Systems: A Review of Models, Methods, and Applications," Energies, MDPI, vol. 14(20), pages 1-47, October.
    2. A.S. Jameel Hassan & Umar Marikkar & G.W. Kasun Prabhath & Aranee Balachandran & W.G. Chaminda Bandara & Parakrama B. Ekanayake & Roshan I. Godaliyadda & Janaka B. Ekanayake, 2021. "A Sensitivity Matrix Approach Using Two-Stage Optimization for Voltage Regulation of LV Networks with High PV Penetration," Energies, MDPI, vol. 14(20), pages 1-24, October.
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    Cited by:

    1. James Amankwah Adu & Alberto Berizzi & Francesco Conte & Fabio D’Agostino & Valentin Ilea & Fabio Napolitano & Tadeo Pontecorvo & Andrea Vicario, 2022. "Power System Stability Analysis of the Sicilian Network in the 2050 OSMOSE Project Scenario," Energies, MDPI, vol. 15(10), pages 1-33, May.

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